The three Gateway Grade courses are Grounding Your Life Purpose, Accessing Angelic Realms, and Creating Abundance. They have been designed to support your needs as an incarnated Soul seeking to manifest your purpose in the world. The supervised versions of these courses include regular calls with me, and email contact when necessary.
These courses can be taken without having done any other SoulSchool course, although I do recommend you first learn at least the Shefa Method to support your Soul and provide a powerful bedrock of Divine sustenance. In order to do the Gateway Grade courses, you need to be practiced in a reliable meditation technique that consistently puts you in touch with Divine Source — the Shefa Method is an easy way to achieve this.